Metal duct drive bending tool

Abstract

This disclosure relates to an improved metal duct drive bending tool. The improved metal duct drive bending tool of this disclosure is a portable metal frame type apparatus which uses the pivoting action between two pivotable members of the frame, one of which has teeth, to form a drive at the end of a metal duct that is inserted into a pocket within the frame apparatus between the two pivotable members. The improved metal duct drive bending tool uses the teeth on one of the pivotable members to permit the insertion of various widths of metal duct end portions to be bent.

I claim: 
     
       1. A metal duct edge bending tool comprising, in combination, a first member having means for holding an edge portion of a metal duct, said holding means comprising a pocket portion located at one edge portion of said first member, a second member having means located at an edge portion of said second member adjacent said one edge portion of said first member for support against the metal duct held by the holding means of said first member while one of said members bend said held portion more than 90°, and pivoting means for permitting at least one of said first and second members to be pivoted to form a more than 90° bend on the edge portion of the metal duct held by the holding means of said first member, said supporting means of said second member comprising a plurality of spaced apart teeth elements. 
     
     
       2. A metal duct edge bending tool in accordance with claim 1 wherein said pivoting means comprising a hinge connecting said first member to said second member. 
     
     
       3. A metal duct edge bending tool in accordance with claim 2 wherein said pocket portion being located on the opposite side of said hinge from said second member. 
     
     
       4. A metal duct edge bending tool in accordance with claim 1 wherein said second member comprising a triangular shaped metal element. 
     
     
       5. A metal duct edge bending tool in accordance with claim 1 wherein said first member comprising a triangular shaped metal element. 
     
     
       6. A metal duct edge bending tool in accordance with claim 5 wherein said second member comprising a triangular shaped metal element. 
     
     
       7. A metal duct edge bending tool in accordance with claim 6 wherein said triangular shaped metal element of said first member having a handle portion defining an apertured center portion, said triangular shaped metal element of said second member having a handle portion defining an apertured center portion. 
     
     
       8. A method for forming a more than 90° drive on a metal duct end portion comprising the steps of: inserting a metal duct end portion into a pocket formed by one of two pivoting members of a tool that can hold the metal duct end portion, the other of said two pivoting members having a plurality of teeth located adjacent to the pocket;   pivoting one of the two members of the tool to bend the portion of the metal duct end portion that is held by said one of said members of the tool by the bending action of the holding end portion relative to the plurality of teeth against the metal duct end portion; and   pivoting the other of the two members of the tool to release the metal duct end portion from the tool after the formation of a drive thereon.